Automatic Refracto-Keratometer

Active Publication Date: 2012-07-26
HUVITZ
View PDF3 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]An eye and/or a contact lens placed on the eye are observed with the color observation optical system in the refracto-keratometer of the present invention. The prescription of a contact lens can be carried out effectively with the refracto-keratometer of the

Problems solved by technology

Thus, tear is not properly circulated, impurities cannot be properly removed from eye, and oxygen cannot be properly supplied to the eye.
Thus, the contact lens user may feel inconvenience in eyelid movements and a corneal xerosis.
Especially, the observation apparatus simply displays a magnified image of an eye,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Automatic Refracto-Keratometer
  • Automatic Refracto-Keratometer
  • Automatic Refracto-Keratometer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031]A more complete appreciation of the invention, and many of the attendant advantages thereof, will be better appreciated by reference to the following detailed description.

[0032]FIG. 6 is an optical circuit showing a configuration of a refracto-keratometer according to an embodiment of the present invention. As shown in FIG. 6, the refracto-keratometer of the present invention includes an infrared optical system 10 for examining an alignment of an eye 5 and for measuring a corneal curvature of the eye 5, a fogging optical system 30 for relaxing the eye's accommodation power, a refractive power measuring optical system 50 for measuring a refractive power of the eye 5, and a color observation optical system 70 for obtaining a visible light image of the eye 5 and a contact lens placed on the eye 5. In FIG. 6, same reference numerals are designated to the elements having the same or similar functions with the elements shown in FIG. 1.

[0033]In the refracto-keratometer of the present...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

An auto refracto-keratometer not only produces a black-and-white image for observing the alignment of eyes to be examined using an infrared illumination light but also has a color observation optical system for observing a condition of eyes to be examined using color-illumination light. The auto refracto-keratometer comprises an infrared optical system for examining an alignment and corneal curvature of eyes to be examined; a fogging optical system for relaxing accommodation of the eyes; a measuring optical system for measuring refractive power of the eyes; and a color observation optical system having a visible light source for emitting at least one visible light to the eyes and a 2-dimensional imaging device for detecting image of visible light reflected by the eyes.

Description

[0001]This application claims the priority benefits of Korean Patent Application No. 10-2011-0006984 filed on Jan. 24, 2011, and Korean Patent Application No. 10-2011-0010700 filed on Feb. 7, 2011. All disclosures of the Korean Patent applications are incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention relates to an automatic refracto-keratometer, and more particularly, to an automatic refracto-keratometer which not only produces a black-and-white image for observing an alignment of an eye to be examined using an infrared illumination light but also has a color observation optical system for observing the eye using a color illumination light. This invention also relates to a method for evaluating a fitting state of contact lens with an image processing technique for detecting a dye pattern by using the automatic refracto-keratometer.BACKGROUNDS OF THE INVENTION[0003]An automatic refracto-keratometer is a precise measuring-instrument used in the field of ophth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B3/107A61B3/103A61B3/14
CPCA61B3/103A61B3/0025A61B3/152A61B3/107
Inventor KIM, HYOUNG-UKLEE, JOONG-JAE
Owner HUVITZ
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap